Ekorus

Threshold - As long as seven or more cards are in your graveyard, Ekorus gets +1/+1.
Ekorus ekakeran is a large extinct mustelid that inhabited Kenya.
Standing 60 centimeters tall at the shoulders, its build was not similar to that of modern mustelids. Modern-day weasels have short legs and can only achieve short bursts of speed. The legs of Ekorus are built like those of leopards.